TS: switch all imports to type imports (#3118)

Author: IvanGoncharov

src/error/GraphQLError.d.ts

@@ -1,8 +1,8 @@
-import { Maybe } from '../jsutils/Maybe';
+import type { Maybe } from '../jsutils/Maybe';
 
-import { ASTNode } from '../language/ast';
-import { Source } from '../language/source';
-import { SourceLocation } from '../language/location';
+import type { ASTNode } from '../language/ast';
+import type { Source } from '../language/source';
+import type { SourceLocation } from '../language/location';
 
 /**
  * A GraphQLError describes an Error found during the parse, validate, or

src/error/formatError.d.ts

@@ -1,6 +1,6 @@
-import { SourceLocation } from '../language/location';
+import type { SourceLocation } from '../language/location';
 
-import { GraphQLError } from './GraphQLError';
+import type { GraphQLError } from './GraphQLError';
 
 /**
  * Given a GraphQLError, format it according to the rules described by the

src/error/locatedError.d.ts

@@ -1,8 +1,8 @@
-import { Maybe } from '../jsutils/Maybe';
+import type { Maybe } from '../jsutils/Maybe';
 
-import { ASTNode } from '../language/ast';
+import type { ASTNode } from '../language/ast';
 
-import { GraphQLError } from './GraphQLError';
+import type { GraphQLError } from './GraphQLError';
 
 /**
  * Given an arbitrary value, presumably thrown while attempting to execute a

src/error/syntaxError.d.ts

@@ -1,6 +1,6 @@
-import { Source } from '../language/source';
+import type { Source } from '../language/source';
 
-import { GraphQLError } from './GraphQLError';
+import type { GraphQLError } from './GraphQLError';
 
 /**
  * Produces a GraphQLError representing a syntax error, containing useful

src/execution/execute.d.ts

@@ -1,21 +1,21 @@
-import { Maybe } from '../jsutils/Maybe';
-import { ObjMap } from '../jsutils/ObjMap';
+import type { Maybe } from '../jsutils/Maybe';
+import type { ObjMap } from '../jsutils/ObjMap';
 
-import { PromiseOrValue } from '../jsutils/PromiseOrValue';
-import { Path } from '../jsutils/Path';
+import type { PromiseOrValue } from '../jsutils/PromiseOrValue';
+import type { Path } from '../jsutils/Path';
 
-import { GraphQLError } from '../error/GraphQLError';
-import { GraphQLFormattedError } from '../error/formatError';
+import type { GraphQLError } from '../error/GraphQLError';
+import type { GraphQLFormattedError } from '../error/formatError';
 
-import {
+import type {
   DocumentNode,
   OperationDefinitionNode,
   SelectionSetNode,
   FieldNode,
   FragmentDefinitionNode,
 } from '../language/ast';
-import { GraphQLSchema } from '../type/schema';
-import {
+import type { GraphQLSchema } from '../type/schema';
+import type {
   GraphQLField,
   GraphQLFieldResolver,
   GraphQLResolveInfo,

src/execution/values.d.ts

@@ -1,16 +1,16 @@
-import { Maybe } from '../jsutils/Maybe';
-import { ObjMap } from '../jsutils/ObjMap';
+import type { Maybe } from '../jsutils/Maybe';
+import type { ObjMap } from '../jsutils/ObjMap';
 
-import { GraphQLError } from '../error/GraphQLError';
-import {
+import type { GraphQLError } from '../error/GraphQLError';
+import type {
   FieldNode,
   DirectiveNode,
   VariableDefinitionNode,
 } from '../language/ast';
 
-import { GraphQLDirective } from '../type/directives';
-import { GraphQLSchema } from '../type/schema';
-import { GraphQLField } from '../type/definition';
+import type { GraphQLDirective } from '../type/directives';
+import type { GraphQLSchema } from '../type/schema';
+import type { GraphQLField } from '../type/definition';
 
 type CoercedVariableValues =
   | { errors: ReadonlyArray<GraphQLError>; coerced?: never }

src/graphql.d.ts

@@ -1,9 +1,12 @@
-import { Maybe } from './jsutils/Maybe';
+import type { Maybe } from './jsutils/Maybe';
 
-import { Source } from './language/source';
-import { GraphQLSchema } from './type/schema';
-import { GraphQLFieldResolver, GraphQLTypeResolver } from './type/definition';
-import { ExecutionResult } from './execution/execute';
+import type { Source } from './language/source';
+import type { GraphQLSchema } from './type/schema';
+import type {
+  GraphQLFieldResolver,
+  GraphQLTypeResolver,
+} from './type/definition';
+import type { ExecutionResult } from './execution/execute';
 
 /**
  * This is the primary entry point function for fulfilling GraphQL operations

src/language/ast.d.ts

@@ -1,5 +1,5 @@
-import { Source } from './source';
-import { TokenKindEnum } from './tokenKind';
+import type { Source } from './source';
+import type { TokenKindEnum } from './tokenKind';
 
 /**
  * Contains a range of UTF-8 character offsets and token references that

src/language/lexer.d.ts

@@ -1,6 +1,6 @@
-import { Token } from './ast';
-import { Source } from './source';
-import { TokenKindEnum } from './tokenKind';
+import type { Token } from './ast';
+import type { Source } from './source';
+import type { TokenKindEnum } from './tokenKind';
 
 /**
  * Given a Source object, this returns a Lexer for that source.

src/language/location.d.ts

@@ -1,4 +1,4 @@
-import { Source } from './source';
+import type { Source } from './source';
 
 /**
  * Represents a location in a Source.